THE advantages of a combination of galvanising and painting in increasing the durability of steel sheets appear to be more generally recognised in the United States than in Europe. In combination with paint, galvanising performs the double function of providing, after a suitable surface treatment, an excellent basis for the paint, and of giving additional protection to the steel by preventing rust from spreading under the paint film from any imperfections in it. Minor discontinuities in the paint film are quickly closed by zinc corrosion products.
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